Slitting-machine.



J. A. CAMERON & G. B. BIRCH.- SLITTING MACHINE.

APPLICATION FILED APR.7,1913.

1 116395,, Patented N0v.'10,1914.

2 SHEETSSHEBT 1.

35. 1am?? M WWW J. A. CAMERON & G. B. BIRCH.

SLITTING MACHINE.

APPLIOATION FILED APR. 7, 191a.

Patented Nov. 10, 1914.

2 SHEETS-SHEET 2.

& M

awvew 5 M JAMES UNITED STATES PATENT OFFICE.

A. CAMERON AND ous'rar ninen'n'nrncri, or NEW YORK, N. Y., assrenons 'rocAMEnoN MACHINE COMPANY, A CORPORATION on NEW YORK.

SLIT'IING-MACHINE.

Specification of Letters Patent.

Patented Nov. 10, 1914..

Application filed April 7, 1913. Serial No. 759,449.

To all whom it may concern:

Be it known that we,.-JAMEs A. CAMERON and Gus'rar Brncnn BIRCH, bothcitizens of theUnited States, and residents of the borough 0f Brooklyn,in the county of Kings, city and State of New York, have inventedcertain new and useful Improvements in slitting-Machines, of which thefollowing is a specification.

The present invention relates more particularly to'web slitting machinesand has for its main object the production of means whereby the web willbe slit without distortion out of the plane of severance, and whereby agreater efficiency will be produced without decreasing the accessibilityof the parts.

It has been established that a surface rewind and a score cutter producethe best results, the score cutter preventing the slit sections fromoverlapping so that they can be properly rewound, and the surfacerewindpulling with equal force on all. the slit sections so that nodistortion takes place out of the plane of severance. It happens,however, that at times the fabric iscreased or wrinkled when it reachesthe cutting or slitting device, and therefore no matter how accurate thecutting device operates, a slight distortion will still take place owingto the imperfections of the fabric itself.

Accordingly one feature of the present invention resides broadly inproviding'means for smoothing out the wrinkles of the fabric before itpasses through the slitting device. Preferably this is accomplished byhaving a cutting member provided with a smooth surface, eitherconsisting of a plurality of spaced disks, or, as shown in the presentinstance, a plurality of closely abutting rings constitutingsubstantially one continuous surface, and by having a score cutterengage therewith, together with means for causing the web of material tobe guided into engagement with the smooth surface of the cutting memberat a point in advance of the point of engagement of the cutter with thecutting member. The means for smoothing out the wrinkles consistpreferably of guiding means or deflecting means which turn the web outof the straight path and guide it against the cutting member at a pointin advance of the point where the cutter acts against the same.Preferably the guiding or deflecting means is interposed beneath andbetween two surface rewinding rolls run of the web,

one of which acts as the cutting member. Suitable means are provided formoving this guiding-means into and out of engagement withwthe web.

efinother feature of the invention resides in interrelated meanscomprising in part an actuating means whereby the cutter may be broughtinto engagement with the cutting member and the web guiding or webtension 7 means may be brought into engagement with the web, the partsbeing so arranged that the operating means for the web tension means aremoved a predetermined distance while the operating means for the cuttermove a variably greater distance or may continue to act to increase thepressure on the spring-seated cutter while the web tension means remainat rest. 1

Under certain conditions, such as when cutting cloth, it sometimesoccurs that a few threads of the adjacent sections of the web will notbe severed by the slitting device. Under these conditions it is desrable to guide the slit sections away from the cutting member beforer'ewinding the same so as to expose the web for a distance in. anunsupported layer and to have separating knives, preferably angularlydisposed to the extend in between the slit sections so as to sever anyremaining threads.

Other features of construction and arrangement of parts and combinationof elements will appear as the specification proceeds.

In the drawings the invention is embodied in a concrete form, butchanges may of course be made without departing from the scope of theinvention. 1

In the said drawings: Figure 1 is a vertical sectional view of aslitting machine view of the means for moving the cutter and web guidingor tensioridevice. Fig. 3 is a plan view of a part of the improvedseparating means employed. Fig. 4 is a section embodying the invention.1 Fig. 2 is a detail on the line H of Fig. 3. Figs. 5 and 6 are detailviews of the separating knife used.

Similar characters of reference indicate corresponding parts in theseveral views.

Iindicates the supply of web to be slit,

the web being threaded around the guide rolls 2, 3, 4; and 5. From theroll 5,'the web usually runs straight tothe rewinding roll 6, the lattertogether with the rewinding roll 7 rotating in the same direction as 6,

p pressed engagement with the cutting mem supporting the slittedsections 8 on the rewinding means or spindle 9 in a manner wellunderstood, the web being thereby advanced between the members 6 and 12.

The cutting member 6 consists in this instance of a shaft 10 havingrings 11 secured thereto, said rings being In close abutting end to endengagement. The surface of the rings 11 is smooth and harder than thescore cutter 12 so that the latter will not cut grooves in the surfaceof the ring 11. The

cutter 12 is rotatably mounted in the arm 13" which is loosely pivotedon the spacing member 14 adjustably secured to the rail 15 by means ofscrew 16. 17 indicates a spring for holding the score cutter in springer6. 18 is a web tension member'which is located underneath the rolls 6and 7 and in termediate the same, which, when in its raised position,shown in Fig. 1, serves to guide or deflect the web out of its straightpath and into engagement, preferably with 0th rolls 6 and 7, withoutpinching the web between 18 and 6 or 7, the'web enga ing with the roll 6at a point in advance 0 the point where the cutter 12 acts against thesame. to be smoothed out sothat the material will be cut evenly andwithout distortion out of the plane of severance.

Suitable means are provided for bringing the member 18 into and out ofengagement wlth the web and the cutter 12 into and out of engagementwith the roll 6. These means may take man forms. As here shown, an

actuating member 19, shown as a rotatable shaft provided with a handle20, is utilized. This shaft 19 constitutes a cam or eccentric byhavingeccentric extensions 21, onl one of which is shown, which rest insultable bearings- On the shaft 19 rest the abutments 51 carried by therail 15. The shaft 19 further carries two cams 22 which engage theoverhanging portion 23 of the pivv, oted levers or arms 24:, whichlattercarries the member 18. The cams 19 and 22 are so arranged withrespect to each other that they will act on the operating members (15and 2 1) of the cutter 12 and member 18 respectively, and by turning thehandle 20 only a certain predetermined distance. After this 'point hasbeen reached the actuating handle 20 may be moved a variably.

greater distance without affecting the position of the member 18, butwith the efiect anam- This causes wrinkles in the material.

that the cams 21.,continue to act on the member- 15 to putthe cutter 12under the variably requisite pressure. When the have been brought to theproper position, the awl 25 is dropped into the ratchet 26 on t e shaft19 thereby maintaining the parts in the position to which they have beenadjusted.

27 indicates a roll mounted loosely in the 0 en bracket 28 (Fig. 4). -Incertain cases t e slit sections of the web ma be led from the roll 6around-roll 27 and t en back to 6 again and to the rewinding means forthe purpose of exposing the fabric in a single unsupported layer.Extending .above the roll 27 is the inclined rail 29 on which aresecured separating knives 30 which extend angular-1y or obliquely inbetween the slit sections of the web for the purpose of cutting anyunsevered threads. Preferably these knives 30 are made of sheet materialwith a bead or stiffening member 31 at the top, and are slid into thegroove 32 of the bracket 33 where they are held in position by means ofthe tightening screw 34. The bracket 83 is clamped to the rail 29 bymeans of the screw 35.

lVhat is claimed, is: v

1. In a machine of the character set forth, a cutter, two rewindingrolls adapted to engage with the surface of the slit web to rewind thesame, one of said rolls acting as a cutting member against which thecutter acts, and means located below the two re winding rolls andintermediate the same for guiding the web into engagement with thesurface of the roll constituting the cutting member at a point inadvance of the point of engagement of the cutter with the cuttingmember. I 4

2. Ina machine of the character set forth, a cutter, tworewinding rollsadapted to engage with the surface of' the slit web to rewind the same,one of said rolls acting as a cutting memb'er against which the cutteracts, means located below the two rewinding rolls and intermediate thesame for guiding the web into engagement with the surface of the rollconstituting the cutting member at a point in advance of the point ofengagement of the cutter with the cutting member, and means for shiftingthe guiding megns into and out of engagement with the we 3. In'a machineof the character set forth, a cutting member having a smooth surface, acutter adapted to act against said surface, means for advancing a web ofmaterial be,- tween the cutter and cutting surface, means for guidingthe web into engagement with the surface of the cutting member at apoint in advance of the point of'engagemcnt of the cutter with'hecutting member, and in arts terrelated means for moving the cutter'toward and away from the cutting'member and the guiding means toward andaway from the web substantially simultaneously.

4. In a machine of the character set forth, a cutting member, a cutter,web tension means, operating means for movin the cutter toward and awayfrom the cutting member, operating means for moving the web tensionmeans toward and away from the web, and an actuating device common toboth operating devices adapted to move the operating device for thetensionmeans a predetermined distance and adapted to move the operatingmeans for the cutter a variably greater distance.

5. In a machine of the character set forth, a cutting member having asmooth surface, a cutter adapted to act against said surface, means foradvancing a web of material between the cutter and cutting surface,means for guiding the web into engagement with the surface of thecutting member at a point in advance of the point of engagement of thecutter with the cutting member, operating means for moving the cuttertoward and away from the cutting member, operating means for moving theguiding means toward and away from the web, and an actuating devicecommon to both operating devices adapted to move the operating devicefor the guiding means a predetermined distance and adapted to move theoperating means for the cutter a variably greater distance.

6. In a machine of the character set forth, a cutting member, aspring-seated cutter adapted to engage therewith, web tension means, andinterrelated means for carrying the cutter and web tensiom means intoengagement with the cutting member and web concurrently and then toincrease the tension on the cutter while the web tension means remainsat rest.

7. In a machine of the character set forth, a cutting member, aspring-seated cutter adapted to engage therewith, web tension means, arotatable member, and cams on said member adapted to carry the cutterand web tension means into engagement with the cutting member and webrespectively and then to increase the tension on the cutter while theweb tension means remains at rest.

8. In a machine of the character set forth, a cutting member having asmooth surface, a cutter cooperating therewith, rewinding means for theslitted-web, means, interposed between'the cutting member and therewinding means, for exposing the slit fabric in a single unsupportedlayer, and a separating knife adapted to extend in between the slitsections of the web while the latter is traveling in an unsupportedlayer.

9. In a machine of the character set forth, a cutting member having asmooth surface,

,a cutter cooperating therewith, rewinding means for the slitted web,means, interposed between the cutting member and the rewinding means,for exposing the slit fabric in a single unsupported layer, and aseparating knife extending angularly to the run of the web in betweenthe slit sections of the web while it is traveling in an unsupportedlayer.

10. In a machine of the character set forth, a cutter, two smooth-facedrewinding rolls rotating in the same direction adapted to engage withthe surface of the slit web to rewind the same, one of said rolls actingas a cutting member against which the cutter acts, and means locatedbelow the two rewinding rolls and intermediate the same for guiding theweb into engagement with the surfaces of both rewinding rolls, the webengaging with the rewinding roll constituting the cutting member at apoint in advance of the point of engagement of the cutter with thecutting member.

11. In a machine of the character set forth, a cutter, two rewindingrolls adapted to engage with the surface of the slit web to rewind thesame, one of said rolls acting as a cutting member against which thecutter acts, a fabric exposing roll coacting with one of said rewindingrolls, and a knife device obliquely set between said last-mentionedrolls to sever unsplit threads, said knife device comprising a knifeblade of sheet material having a head at. the top, a grooved supportingmember into which the blade fits, and means for securing the blade inposition in the supporting member.

12. In a machine of the character set forth, a cutting member, a springseated cuttear adapted to engage therewith, web tension means, arotatable member eccentrically mounted, operating means for the cutteractuated by said eccentric rotatable member, and cams on said rotatableeccentric member adapted to move the web tension means.

13. In a machine of the character set forth, a cutting member, a springseated cutter adapted to engage therewith, web tension means, arotatable member eccentrically mounted, operating means for the cutteractuated by said eccentric rotatable member, and cams on said rotatableeccentric member adapted to move the web tension means, said cams havinga portion concentric with the center of rotation of the rotatablemember.

tigned at Brooklyn in the county of Kings and State of New York this13th day of March A. D. 1913.

JAMES A. CAMERON. GUSTAF BIB-GER BIRCH. VVitnesse's FRANK C. RrssELT,JOHN P. CODY.

